NDLI: Visual Stimulation and Electroencephalogram under Scotopic Vision

Content Provider	IEEE Xplore Digital Library
Author	Wuon-Shik Kim Hye-Rim Oh Hyoung-Min Choi Ji-Soo Hwang Seong Nam Park Hyun Kyoon Lim
Copyright Year	2011
Abstract	Abstract -- We tested the visual sensitivity of 15 healthy subjects under scotopic vision using flickering stimulus on the Liquid crystal display (LCD) with a light-emitting diode (LED) backlight (LED-LCD) panel. This test was made to know; 1) if LED-LCD panel might be used for the visual stimulation under scotopic vision, and 2) the minimum trials for ensemble average to get visually evoked potential (VEP). Green, Blue, and Red colors were tested in the darkroom. Electroencephalogram electrodes were used. The brightness of each color was degraded into 255 steps. All participants were asked to watch a circle with red, green, and blue color on the LED-LCD panel. As a result, VEP showed a well-known response pattern when the signals were ensemble averaged for 50 trials. The peak of VEP was not much changed after 25 trials. LED-LCD panel was simple and useful for the simple visual stimulation to test VEP.
Starting Page	448
Ending Page	450
File Size	206718
Page Count	3
File Format	PDF
ISBN	9781457708688
ISSN	15506037
DOI	10.1109/IV.2011.110
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-13
Publisher Place	United Kingdom
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Image color analysis Visualization Color Electroencephalography Humans Computers Electrodes Optimization component formatting Scotopic vision Light emission display Visually evoked potential (VEP)
Content Type	Text
Resource Type	Article

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